Problem Set5: Problem 5
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(1 point) The Hubert H. Humphrey Metrodome in Minneapolis opened in 1982 at a cost of $55 million. To prepare for the footings, et cetera, 3.00$ \times 10^6 $ cubic yards of dirt
were removed. The Metrodome's inflatable roof covers 10.0 acres and its interior volume is 60.0$ \times 10^6 $ cubic feet. During construction, 40.0$ \times 10^6 $ cubic yards of concrete,
11.92$ \times 10^6 $ tons of reinforcing steel, and 5.00$ \times 10^6 $ tons of structural steel were utilized. The roof material includes an outer layer of Teflon-coated glass and an inner layer
of woven fiberglass. Given this information, answer the following:
If removed evenly over the 10.0 acres, how deep a hole would be formed as a result of the excavation?
yards
If the two-layer fiberglass roofing material has a mass of 0.667 $lb/ft^2$, what is the total mass of the roof?
$lb_m$
If 10.0 inches of wet snow collected on the roof (this happened in 1982), what is the added mass on the roof? (Assume 1 inch of water equals 10 inches of snow).
$lb_m$
(Engineering Fundamentals and Problem Solving, 5th ed. p. 163)
Note: You can earn partial credit on this problem.
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